您要查找的是不是：
- Put the dagger back in its sheath. 把短剑插回鞘内。
- A convex surface, body, part, or line. 凸面、凸面体、凸面部分或凸线
- Forming or enclosed in a sheath. 有鞘的形成鞘的或装在鞘内的
- convex sheath 凸形镜鞘
- The sheath of connective tissue enclosing a bundle of nerve fibers. 经来膜包裹住神经纤维的膜状结缔组织
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- Light can be collected with the convex. 凸透镜具有聚集光线的作用。
- The convex surfaces faces toward the left. 凸面朝左方。
- Relating to or resembling a sheath. 鞘的与鞘有关的或鞘状的
- A convex lens is used to concentrate rays of light. 凸透镜用于聚集光线。
- He drew his sword from its sheath. 他拔剑出鞘。
- He drew the knife from its sheath. 他把刀从刀套里退出来。
- A stone tool with a convex side. 龟甲形石斧一边凸起的石制工具
- A protective covering or sheath. 鞘一种保护性的覆盖物或套
- An enveloping sheath or envelope. 外皮或包膜一个包装壳或外壳
- His sword now sleeps in the sheath. 他的剑现在在鞘内。
- A deep - red garnet, unfaceted and convex. 红榴石一种深红色的石榴石，无刻面呈凸圆状
- Concave on one side and convex on the other. 一面凹进一面凸起的
- FLEXIBLE STEEL CABLE COVERED WITH PLASTIC SHEATH. 弹簧钢丝外套塑料护套。
- Convex on one side and concave on the other. 凸凹的一面凸一面凹的
